JP2001044955A - Bearer integration method and device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To increase the chances for integrating bearers and also to increase the number of radio channels by integrating the transmission-reception delay allocations with a specific radio channel when a bearer service is integrated with another. SOLUTION: The bearer service data A which are inputted at the transmitting side in the reference frame timing of cycle T are outputted after the 1-frame delay under the delay control of the transmission-reception delay allocations A and A' and then the bearer service A is integrated with another bearer service. Under such conditions, the transmission-reception delay allocations are integrated with radio channels B and B'. The common transmission delay of transmission delay addition parts 51a and 51b is set in the bearer integration timing and the subsequent data apply the transmission delay C. At a reception delay addition part 56a, the reception delay C' is set in the first frame offset A from the bearer integration timing. At a reception delay addition part 56b, the reception delay C' is set in the frame offset B. The data which are received thereafter apply the reception delay C'.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bearer integration method and apparatus, and more particularly, to a bearer integration method for integrating a plurality of bearer services into one radio channel by time-division multiplexing / separation by baseband processing, and a method thereof. Related to the device.

[0002] In wireless communication by the CDMA system, since a plurality of terminal (mobile) stations use the same radio frequency, each terminal station is controlled to perform communication with lower power by a technique such as soft handoff, and each of them is controlled. Interference is suppressed, and the number of usable wireless channels is increased. Further, it is possible to provide a plurality of bearer services through one terminal station. In this case, if a radio channel is used for each bearer service, the radio channel and power are not effectively used. The bearer service is integrated into one radio channel by performing time division multiplexing / demultiplexing by baseband processing. Therefore, it is desired that such bearer integration be performed efficiently and without interruption.

[0003]

2. Description of the Related Art FIGS. 15 to 19 are diagrams (1) to (5) for explaining the prior art, and FIG. 15 shows a partial configuration of a conventional CDMA mobile communication system. In the figure, 1 is a mobile station (MS) or terminal station, and 8 and 9 are mobile stations 1
, Terminal devices (TE-A, TE-B) respectively terminating bearer services, a base station (BTS) 2 for performing wireless communication with the mobile station 1 by the CDMA scheme, and a bearer integrated control, etc. Base station controller (BSC), 4 is a mobile switching center (MSC), 100 is a public switched telephone network (PSTN), 6, 7
Are terminal devices (TE-C, TE-D) connected to the public network 100 and terminating bearer services respectively.

[0004] Communication between the TE-A and the TE-C is carried out using a bearer service, and the mobile station 1 and the base station 2 use one radio channel (for example) for the bearer service.
You are using In this state, if there is a new bearer service communication request between TE-B and TE-D, the base station control device 3 will be able to secure a radio channel (for example) that can accommodate the bearer service for two channels. Releases the wireless channel already used and instructs the mobile station 1 and the base station 2 to use the wireless channel. As a result, each bearer service is transmitted and the base station controller 3
The mobile station 1 performs time-division multiplexing (bearer integration) on each uplink, and thereafter performs communication using one wireless channel. When the base station controller 3 cannot secure the radio channel, the base station controller 3 first sets the TE-B and TE-D
In order to perform the bearer service between them, a wireless channel (for example) that is free at that time is reserved, and the mobile station 1 and the base station 2 are instructed to use the wireless channel.
Thereafter, when it becomes possible to secure the wireless channel, the mobile station 1 and the base station 2 are instructed to release the wireless channel in use and to use the wireless channel.

FIG. 16 shows a basic configuration of a transmission / reception processing unit (but not compatible with bearer integration) in the conventional mobile station 1. This figure is the same as the transmission / reception processing configuration for one line realized between the mobile station 1 and the base station 2 and the base station controller 3.

In FIG. 1, reference numeral 10 denotes a transmission processing unit, 11 denotes a bearer interface unit, 12 denotes a frame processing unit for adding a frame header identifier or the like for a radio frame, 13 denotes an error correction coding unit using a convolutional code or the like, and 14 denotes a different unit. A symbol repetition unit for converting the data transmission rate to a symbol rate that matches the chip rate, an interleaving unit 15 for dispersing each symbol within a frame unit, a spreading modulator 16 for spreading symbols by a set spreading code, 1
7 is a baseband filter unit, 18 is a D / A conversion unit, 1
9 is a transmission IF unit, 20 is a transmission radio unit, 21 is a transmission filter + antenna unit, and 22 is a transmission control unit that controls the above units.

Further, reference numeral 30 denotes a reception processing unit, 31 denotes a reception filter + antenna unit, 32 denotes a reception radio unit, and 33 denotes a reception IF.
, 34 is an A / D conversion unit, 35 is a baseband filter unit, 36 is a RAKE receiving unit that synthesizes a despread code by a plurality of fingers, 361 is its finger unit, 362 is a delay lock loop (DLL) unit, and 363 is A searcher unit, 364 is a combining unit, 37 is a deinterleave unit, 38 is a symbol extraction unit that extracts data from input symbols at a data extraction clock corresponding to a specified transmission rate, 39 is an error correction decoding unit such as Viterbi decoding, and 40 is a wireless unit. A frame processing unit (including the handoff control in the case of the base station control device 3) for deleting a frame header identifier and the like for a channel, 41 is a bearer interface unit, and 42 is a reception control unit for controlling the above units.

In the relationship between the base station 2 and the base station controller 3, the downlink bearer interface unit 11, the frame processing unit 12, and the uplink frame processing unit 4
0, the bearer interface unit 41 is included on the side of the base station controller 3, and the other components are included on the side of the base station 2.

The transmission processing unit 10 can change the transmission radio channel and the data transmission rate by changing the spreading code set in the spreading modulator 16 and the data transmission rate set in the symbol repetition unit 14. Part 30
In the above, the reception radio channel and the data transmission rate can be changed by changing the spread code set in the finger section 361 of the RAKE receiving section 36 and the data transmission rate set in the symbol extraction section 38.

FIG. 17 is a timing chart of a conventional communication switching to a wireless channel having a different data transmission rate. Generally, in the CDMA system, wireless channels are identified by using different spreading codes, and spreading is performed at the same chip rate even at different data transmission rates. Also one
All radio channels transmitted from one base station and each terminal station are synchronized with the system clock and system frame timing. The terminal station 1 can extract the chip rate by receiving the pilot channel transmitted by the base station 2, and can generate the system clock therefrom. The terminal station 1 can extract the frame timing by receiving the sync channel transmitted by the base station 2. Therefore,
Switching of the radio channel can be realized only by switching the spreading code in accordance with the frame timing, and there is no need to perform the resynchronization processing of the clock and the frame. In addition, even if the data transmission rate differs between the wireless channels to be switched, a reception signal that can be received at the same chip rate is used.
This can be realized by switching the setting of how many chips are extracted as one bit in accordance with the frame timing, and thus the switching without instantaneous interruption is possible.

A specific example of wireless channel (transmission rate) switching will be described with reference to FIG. Here, the wireless channel A has a data rate = Ad, a spreading code = Ap, and a wireless channel B
Is data rate = Bd (= 2 × Ad) and spreading code = Bp. In the transmission processing unit 10, the transmission control unit 22 sends a data transmission rate = Ad to the symbol repetition unit 14,
5, the spreading code = Ap is set, and the wireless channel A is transmitted. In this state, if there is a request for wireless channel switching, the transmission control unit 22 transmits the transmission rate = Bd and spread to the symbol repetition unit 14 in synchronization with the transmission switching timing t determined in advance with the reception processing unit 30. The spreading code = Bp is set in the modulator 16, and the wireless channel B is transmitted from this point.

In the reception processing unit 30, a reception control unit 42
Sets the spreading code = Ap in the finger unit 361 of the RAKE receiving unit 36 and the data transmission rate = Ad in the symbol extracting unit 38 in order to receive the wireless channel A before the switching timing t. Then, when there is a request for wireless channel switching, the reception control unit 42 synchronizes the finger unit 361 with the spread code = Bp and the symbol extraction unit 38 in synchronization with the reception switching timing t determined in advance with the transmission processing unit 10. Data transmission speed = Bd is set, and the wireless channel B is received from this point. Since the reception processing unit 30 performs the reception processing based on the extracted system clock / frame timing, by adjusting the reception switching timing t to the frame timing, the communication switching between the wireless channels of different data rates can be performed without interruption. I can do it.

FIG. 18 shows a basic configuration of a transmission / reception processing section (provided that bearer integration is supported) in the conventional mobile station 1. This figure is the same as the transmission / reception processing configuration for one line realized between the mobile station 1 and the base station 2 and the base station controller 3. The transmission processing unit 10 includes two systems (a system and b system) from the bearer interface unit 11 to the baseband filter unit 17, and multiplexes two bearer services in synchronization with frame timing during bearer integration. And 2 before bearer integration
A radio channel multiplexing unit 24 for multiplexing two radio channels into radio signals of the same frequency. Also, the reception processing unit 30
A radio channel separation unit 43 that includes two systems (a system and b system) from the baseband filter unit 35 to the bearer interface unit 41 and separates two radio channels multiplexed on the same frequency before the integration of the bearers; A bearer separation unit 44 separates two bearer services multiplexed during bearer integration in synchronization with frame timing.

The processing route of the bearer service before the integration of the bearers is indicated by solid arrows in the figure. In the transmission processing unit 10, the input bearer services (1) and (2) are
After spreading to the radio channels m1 and m2 of the same frame timing by the respective spreading codes a and 16b, the radio channel multiplexing unit 24 multiplexes the radio signals to radio signals of the same frequency and transmits them. Upon receiving this, in the reception processing unit 30, the wireless channels m 1 and m 2 multiplexed on the same frequency are separated by the wireless channel separation unit 43 into two systems of wireless channel processing units 30 a and 30 b.
And then divide them into RAKE receiving units 36a and 36b.
Are demodulated with the respective spreading codes, and the bearer service (1),
(2) is output.

The processing route of the bearer service at the time of bearer integration is indicated by a dotted arrow in the figure. When there is a request for bearer integration in the above state, the bearer multiplexing unit 23
The time-division multiplexing process of the bearer services (1) and (2) is started from the frame timing predetermined in advance. At the same time, the symbol repetition unit 14b and the spread modulator 1
The wireless channel m3 is set in 6b, and thereafter the data multiplexed by the bearer multiplexing unit 23 is transmitted via the wireless channel m3 at the same frame timing. In response to this, the reception processing unit 30 sets the radio channel m3 in the rake reception unit 36b and the symbol extraction unit 38b in synchronization with the frame timing prearranged with the transmission processing unit 10, and performs bearer separation. The separation process of the bearer service in the unit 44 is started. As a result, the bearer services (1) and (2) performed via the wireless channels m1 and m2 are integrated without interruption into the bearer services (1) and (2) via the single wireless channel m3. .

As described above, in the conventional bearer integration method,
Wireless channel m with same frame timing for bearer integration
As long as the processing was performed between 1, m2, and m3, the bearer integration could be performed without an instantaneous interruption.

[0017]

However, in general, CDs
In the radio communication by the MA system, each terminal station performs communication with smaller power in order to increase the number of radio channels, and the system provides a different frame offset for each radio channel, so that the radio power is transmitted in a certain time zone. Is controlled so as not to concentrate on Therefore, in such a communication system, it is extremely unlikely that a radio channel having the same frame offset is actually free at the time of bearer integration, and in most cases, a radio channel having a different frame offset must be allocated.

FIG. 19 shows a timing chart in the case where bearer integration is performed between radio channels of different frame offsets in the related art. Incidentally, the cycle T of an example reference frame is 20 ms, which is divided into 16 frame offsets.

Prior to bearer integration, bearer service A
Is performing data communication in synchronization with the timing of the frame offset A from the reference frame timing, and the bearer service B is performing data communication in synchronization with the timing of the frame offset B from the reference frame timing.

When there is a request to integrate the bearer services A and B, the base station controller 3 captures, for example, a vacant radio channel C and synchronizes with the bearer integration timing t (the timing of the frame offset C from the reference frame timing). To start the bearer integrated control. At this time, the timing at which the bearer services A and B are taken into the radio channel C on the transmitting side is changed from the frame offsets A and B to the frame offset C, so that the radio channel signals A and B and the radio channel signal A gap (non-signal section) as shown in the figure is generated between C and C. As a result, the bearer service data A and B are instantaneously interrupted on the receiving side, so that bearer integration without instantaneous interruption cannot be performed between wireless channels having different frame offsets.

As described above, in the above-mentioned conventional method, in the case of a bearer service in which instantaneous interruption cannot be tolerated, not only the bearer integration cannot be performed, but also the number of radio channels must be increased due to such a limitation in the past. Could not.

The present invention has been made in view of the above-mentioned problems of the prior art, and has as its object to provide a bearer integration method and a bearer integration method capable of efficiently performing bearer integration without instantaneous interruption, thereby easily increasing the number of radio channels. It is to provide the device.

[0023]

The above-mentioned problem is solved, for example, by referring to FIG.
Is solved. That is, in the bearer integration method of the present invention (1), in the bearer integration method of integrating a plurality of bearer services into one radio channel by time-division multiplexing / demultiplexing by baseband processing, the method is synchronized with the reference frame timing of the period T. The transmission of the bearer service data A input on the transmission side is performed by delay distribution A (0 ≦ A ≦
T), output from the receiving side after one frame delay under the control of A ′ (= TA), and when the bearer service A is integrated with another bearer service, the delay distribution between transmission and reception is B (A ≦ B ≦ T) and B ′ (= T−B).

In the present invention (1), the bearer service data input / output timing between transmission and reception is matched with the reference frame timing, so that each bearer service data can be transmitted between bearer services using radio channels of different frame offsets. Input / output timing can be shared.

The transmission of the bearer service data A input on the transmission side is performed by delay distribution A (0 ≦ A ≦ T), A
′ (= T−A), the delay side is output from the receiving side after one frame delay under the delay control. The bearer service data A input at the frame timing can be output immediately after the frame with the previous bearer output data A without any interruption. Therefore, in the present invention (1), when a certain bearer service A is integrated with another new bearer service B, the radios whose transmission and reception delay distribution is B (A ≦ B ≦ T) and B ′ (= TB) Integrate into channels.

Therefore, according to the present invention (1), even in a communication system having different frame offsets in each radio channel, the chances of bearer integration can be greatly increased.
Therefore, the number of wireless channels can be greatly increased.

Preferably, in the present invention (2), in the above-mentioned present invention (1), when each bearer service under communication is integrated by a plurality of delay distributions, a transmission delay longer than the maximum of these is set. Integrate into a wireless channel with delay allocation.

This will be specifically described with reference to FIG. On the transmitting side, the bearer frame “a” input before the bearer integration is performed.
-1 "to" a-4 "and" b-1 "to" b-4 "are delayed by transmission delays A and B (> A), respectively.
B, and bearer frames "a-5" to "a-8" and "b-5" to "b-"
8 ”with a common transmission delay C (≧ A, B), and after the respective delays, the bearers are integrated and transmitted over the radio channel C.

On the receiving side, bearer frames "a-1" to "a-1" received via radio channels A and B before bearer integration.
"A-4" and "b-1" to "b-4" are received delay A '
(= TA) and B ′ (= TB), respectively, after the delay, and the bearer integrated frames “a-5” to “a-8” and “a-8” and “a-8” received via the radio channel C after the bearer integration. b
-5 "to" b-8 "are output after being delayed by a common reception delay C '(= TC) after the bearer separation.

Focusing on the continuity of the output data on the receiving side,
Bearer frames "a-1" to "a-4" before bearer integration
And "b-1" to "b-4" are bearer integration timings t.
Is completed by one frame after, and from one frame after the bearer integration timing t, the bearer frames “a-5” to “a-8” and “b−” after the bearer integration.
5 "to" b-8 "are continuously output. Therefore,
According to the present invention (2), bearer services that are communicating with each other with a plurality of delay distributions can be efficiently and without delay.

Preferably, in the present invention (3),
In the present invention (1) or (2), two types and two types of delay distribution can be performed for each bearer service between transmission and reception, and one or two or more bearer services of arbitrary delay distribution can be allocated to another arbitrary delay distribution. Integrate with the bearer service.

The present inventions (1) and (2) are based on the premise that one type and one system of delay distribution can be provided for each bearer service between transmission and reception. At 51a, the bearer frame "a-4" which is being delayed by the delay A with the bearer frame "a-4"
-5 "cannot be delayed by a delay C (<A) smaller than this. The same applies to the reception delay adding section 56a. Therefore, in the present invention (3), two types and two delay distributions are possible for each bearer service between transmission and reception, and the bearer integration operation according to the present invention (3) will be specifically described with reference to FIG.

On the transmitting side, bearer frames "a-1" to "a-4" and "b-1" to
Bearer frames "a-5" to "a-" which are transmitted by radio channels A and B after delaying "b-4" by first transmission delays A and B (> A), respectively, and input after bearer integration. 8 "
And "b-5" to "b-8" as a common second transmission delay C
According to (<A, B), bearers are integrated after delays in systems different from those described above, and transmitted via the radio channel C.

On the receiving side, bearer frames “a-1” to “a-1” received via radio channels A and B before bearer integration are performed.
"A-4" and "b-1" to "b-4" are output after delays with first reception delays A '(= TA) and B' (= TB), respectively, and bearer integration After the bearer separation, the bearer integrated frames “a-5” to “a-8” and “b-5” to “b-8” received via the radio channel C are shared by the second reception delay C ′ ( = T−C), and outputs the combined output to the bearer outputs A and B.

Focusing on the continuity of the output data on the receiving side,
Bearer frames "a-1" to "a-4" before bearer integration
And "b-1" to "b-4" are bearer integration timings t.
Is completed by one frame after, and from one frame after the bearer integration timing t, the bearer frames “a-5” to “a-8” and “b−” after the bearer integration.
5 "to" b-8 "are continuously output.

Therefore, according to the present invention (3), regardless of the magnitude of the frame offsets A, B, and C, one or two or more bearer services of the arbitrary delay allocation can be transferred to another arbitrary delay allocation C
(0 ≦ C ≦ T) and C ′ (= TC) can be integrated without interruption.

Further, in the bearer integration method of the present invention (4), a plurality of bearer services are time-division multiplexed /
In the bearer integration method of separating into one radio channel by separating, the bearer service data A input on the transmission side in synchronization with the reference frame timing of the period T is distributed between transmission and reception in a delay distribution A (0 ≦ A ≦ T), A '(=
Under the delay control of 2T-A), the signal is output from the receiving side after a delay of two frames, and the bearer service A is integrated into a radio channel of an arbitrary delay distribution T + B (0 ≦ B ≦ T), B ′ (= TB). Is what you do.

The present invention (4) is based on the premise that one type and one system of delay distribution can be provided for each bearer service between transmission and reception. In such a configuration, if the total delay is one frame period T, Bearer integration cannot be performed on a radio channel with a frame offset B shorter than the bearer service A with which bearer integration is performed. Therefore,
In the present invention (4), the total delay is set to 2T,
One frame period T is always added to the transmission delay B at the time of bearer integration. In this way, even if the frame offset A of the bearer service A is any value from 0 to T, the frame offset B at the time of bearer integration is substantially T + B, and therefore is always larger than the frame offset A.
Therefore, according to the present invention (4), the bearer service of the arbitrary frame offset A (0 ≦ A ≦ T) can be integrated with the bearer service of the arbitrary frame offset B (0 ≦ B ≦ T).

Preferably, in the present invention (5), a plurality of delay distributions A (0 ≦ A ≦
T), A ′ (= 2T−A) and B (0 ≦ B ≦ T), B ′
(= 2T−B), etc., the respective bearer services being communicated with each other are arbitrarily delayed T + C (0 ≦ C ≦ T), C ′ (= TC)
Integrate into wireless channels.

Preferably, in the present invention (6),
In the present invention (5), for example, as shown in FIGS. 11 and 12, two types and two types of delay distribution can be performed for each bearer service between transmission and reception, and a plurality of delay distributions Da (0 ≦ Da ≦ T) ), Da ′ (= 2T−Da), Db (0 ≦ Db ≦ T), and Db ′ (= 2T−Db), respectively, arbitrarily delay distribution T + Dc
(0 ≦ Dc ≦ T) and Dc ′ (= T−Dc), when integrating into the radio channel C, the first side of the input following the bearer integration timing A for any one bearer service A Time T + D for bearer frame "a-7"
c, and a series of second and subsequent bearer frames “a-8” to
"A-17" is respectively delayed by time Dc, and for the other bearer service B, bearer integration timing A
And a series of subsequent bearer frames "b-
9 "to" b-17 "are delayed by the time Dc, these are integrated into the radio channel C and transmitted, and on the receiving side, the first bearer frame" a-7 "separated from the received signal is transmitted at the time Tc. -Dc and the second and subsequent series of bearer frames "a-
8 to "a-17" are output after each delay of time 2T-Dc, and the third and subsequent series of bearer frames "b-
9 "to" b-17 "are output after a delay of time 2T-Dc.

In the present invention (6), two types and two types of delay distribution can be performed for each bearer service between transmission and reception, and the above-mentioned bearer integrated data is controlled to be left-justified. The delay can be reduced.

Preferably, in the present invention (7), in the above present inventions (1) to (6), the delay distribution point between transmission and reception corresponds to the frame offset timing of the system. Therefore, the present inventions (1) to (6) are suitably applied to a mobile communication system based on the CDMA system in which the frame offset timing of the system is defined in advance.

Further, the bearer integration method of the present invention (8) provides a method for time-division multiplexing /
In a bearer integration method of integrating into one radio channel by separating, a total delay margin DM that can be allocated between transmission and reception is obtained by subtracting the delay of the system from the maximum allowable delay defined by the quality of service, and DM ≧
7. In the case of 2T (where T is a reference frame period), the bearer integration method according to claim 4, 5 or 6, wherein T ≦ DM <2.
In the case of T, the bearer integration method according to claim 1, 2 or 3, and in the case of DM <T, the delay distribution between transmission and reception is zero.
Of the bearer integration method described above. Therefore, the delays 0, T, and 2 are within a range that can satisfy the required service quality.
Each bearer integration method of T can be effectively used.

Preferably, in the present invention (9), in the present invention (8), the executable bearer integration method is D
The search is performed by condition determination in the order of M ≧ 2T, T ≦ DM <2T, DM <T.

As the delay margin DM is larger, a bearer integration method that has a greater opportunity for bearer integration can be selected.
Executable bearer integration method is DM ≧ 2T, T ≦ DM <2
By searching in the condition judgment of T, DM <T,
Ultimately, faster bearer integration is possible.

Preferably, in the present invention (10), in the present invention (8), when a new bearer service is additionally integrated for the same terminal station, the previously connected bearer integration method is stored. At the same time, a bearer integration method that can be executed this time is determined according to the previously connected bearer integration method.

In the case where a new bearer service is additionally integrated for the same terminal station, there are many services that require a delay difference between a plurality of bearer services to be substantially zero. In such a case, the previously connected bearer integration method is stored, and preferably the same method as the previously executed bearer integration method is selected according to the previously connected bearer integration method. The bearer integration method can be selected efficiently. Note that the delay margin DM is DM ≧ 2.
Even in the respective bearer integration methods corresponding to T, T ≦ DM <2T, DM <T, if the bearers are integrated at the same frame offset, the delay difference between a plurality of bearer services can be made substantially zero. .

Preferably, in the present invention (11), in the present invention (10), if the delay margin of the bearer service to be additionally integrated this time is smaller than the additional delay of the previously connected bearer integration method, the present delay Select a bearer integration method that matches the margin.

The above-mentioned problem is solved, for example, by the structure shown in FIG. That is, the communication apparatus of the present invention (12) is a communication apparatus of a wireless communication system that can integrate a plurality of bearer services into one wireless channel by time-division multiplexing / demultiplexing by baseband processing. And delaying one or more bearer service data input before the bearer integration until respective frame offset timings, and converting a plurality of bearer service data related to the bearer integration input after the bearer integration into the frame offset timing according to the bearer integration. It includes a transmission delay adding section 51 for delaying the output of the transmission delay adding section and a bearer data multiplexing section 52 for time-division multiplexing a plurality of bearer service data relating to bearer integration of the output of the transmission delay adding section.

Such a communication device can be realized as a base station control device, a mobile station device or the like of a mobile communication system based on the CDMA system.

The communication device of the present invention (13) is a communication device of a wireless communication system that can integrate a plurality of bearer services into one wireless channel by time-division multiplexing / separation by baseband processing. A bearer data separation unit 55 that time-division-separates data related to bearer integration received via a channel, and delays one or more bearer service data received before bearer integration to a reference frame timing, respectively; And a reception delay adding unit 56 for delaying each bearer service data output from the bearer data separation unit until the reference frame timing.

Such a communication device can be realized as a base station control device, a mobile station device or the like of a mobile communication system based on the CDMA system.

Here, the configuration of FIG. 1 will be outlined.
This assists the understanding of the present invention. However, this figure does not limit the scope of the present invention. FIG.
Indicates a case where one type and one system of delay distribution can be performed for each bearer service between transmission and reception.

In the figure, reference numerals 51a and 51b denote transmission delay adding units for storing the input data of the bearer services A and B according to transmission delays (frame offsets) A and B specified from the reference frame timing, and outputting the data. Is output without multiplexing the input bearer data A and B when bearer integration designation = OFF, and time-division multiplexing of the input bearer data A and B when bearer integration designation = ON and bearer integration timing is reached. A bearer data multiplexing unit 53 outputs a plurality of radio channels by code division multiplexing (CDM).
A) is a wireless channel transmission unit (CDMA) for transmission by A).

Further, a radio channel receiver (CDMA) 54 demodulates the CDMA radio channel and receives bearer data of each transmission rate, and 55 separates the bearer data integrated by the bearer data multiplexer 52. The bearer data separation unit 56a and 56b outputs the data of the bearer services A and B from the frame offset to the designated reception delay (that is, the time from the frame offset to the reference frame timing). Is a reception delay adding unit that outputs the data of the bearer services A and B after accumulating the data according to.

The bearer integration timing is determined in advance between the transmission / reception units. When the bearer integration timing comes, a common transmission delay C is set for each of the transmission delay adding sections 51a and 51b, and the transmission delay C is applied to data transmitted thereafter. The reception delay adding section 56a has a reception delay C 'at the first frame offset A from the bearer integration timing.
Similarly, the reception delay adding section 56b sets the reception delay C 'at the frame offset B, and applies the reception delay C' to data received thereafter. The delay from the input of the transmission delay addition unit 51 to the output of the reception delay addition unit 56 is adjusted to the reference frame length T, and only the frame offset on the radio channel changes according to the combination of the transmission delay and the reception delay. It is possible to absorb the time during which bearer data cannot be transmitted due to the difference time at the time of bearer integration even between the wireless channels, and to achieve bearer integration by instantaneous interruption.

[0057]

Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Note that the same reference numerals indicate the same or corresponding parts throughout the drawings.

FIG. 4 is a diagram showing a partial configuration of the mobile communication system according to the first embodiment, in which the delay distribution for a total of one frame period T is controlled between transmission and reception, and the bearer screws with a small frame offset are the same. Alternatively, the case where a bearer can be integrated with a bearer screw having a large frame offset is shown. The configuration of the entire system may be the same as that in FIG. In FIG. 4, the parts (routes) related to the bearer integration control are arranged so as to be easily understood, but the technology described in FIGS. 16 and 18 can be used for the details of each part.

In the figure, reference numeral 3 denotes a base station controller according to the first embodiment, 71 denotes a bearer service interface unit, and 72 denotes the bearer service data taken in synchronization with the reference frame timing up to the set frame offset. A transmission delay adding section 73 for delaying the output, a bearer data multiplexing section 73 for time-division multiplexing a plurality of bearer data according to the bearer integration request, and a multiplexing / non-multiplexing data 74 output from the bearer data multiplexing section 73. A radio frame format conversion unit for converting to a radio frame format of a corresponding transmission rate; 75, a base station interface unit; 76, an offset / frame timing generation unit for generating an offset frame timing of a frame offset set from a reference frame timing; Is the reference frame tie Ring generator, 78 resource management of radio channels (using radio channels, designated frame offset, etc.) and a transmission control section for instructing the bearer integration timing.

Further, 1 is a terminal station (mobile station) according to the first embodiment, 61 is a CDMA radio receiving unit, 62 is a radio frame format converter for extracting bearer data from a radio frame format, and 63 is time division multiplexed. Bearer data separating unit for separating bearer data for each bearer service, 64 is a receiving delay adding unit for delaying and outputting received bearer data at a set frame offset until a reference frame timing, 65 is a bearer service interface , 66 is an offset / frame timing generation unit that generates an offset frame timing of a frame offset set from the reference frame timing, and 67 is a reference frame that generates a reference frame timing from the frame timing extracted by the CDMA radio reception unit 61. The timing generator 68 according to the notification from the transmission control unit 78 of the base station controller 3, the terminal station 1
It is a reception control unit that instructs a radio channel and a frame offset to be used in the apparatus, and an instruction of bearer integration timing.

FIG. 5 is a timing chart of the bearer integration control according to the first embodiment, in which a bearer service B relating to a new call is accepted, and this is integrated with the bearer service A already communicating on the radio channel A. , A case where the communication is continued without interruption by the wireless channel C. This figure does not include a transmission delay in a wireless channel, a processing delay in each device, and the like.

In the figure, TE-C and TE-A communicate with each other via bearer service A (transmission rate Sa) via radio channel A (frame offset Da). At this time, the total delay time of the transmission delay adding section 72 and the reception delay adding section 64 is set to one radio frame period T (for example, 20 ms).
And keep it. As a result, the bearer frame “a-1” captured by the base station controller 3 in synchronization with a certain reference frame timing is transmitted to the wireless channel A after being delayed by the time Da, and is received by the terminal station 1. The terminal station 1 further stores the received bearer frame "a-1" for a time Da '.
(= T−Da) and output. Therefore, the bearer frame "a-1" input on the transmission side at a certain reference frame timing is output from the reception side after a delay of a total of one frame period T.

In this state, if there is a call for the bearer service B (transmission rate Sb) from TE-D to TE-B,
In response to this, the transmission control unit 78 of the base station control device 3 regards the call as the call to the same terminal station 1 and can accommodate two channels (transmission speed = Sa + Sb) from the unused radio channels, and has a frame offset. Search for a wireless channel of ≧ Da. If there is a wireless channel C (frame offset Dc ≧ Da) that satisfies the condition, the wireless channel C is captured and the terminal station 1 TE-B is called. Eventually, when there is a response from TE-B, bearer integration timing is determined between transmission control section 78 and reception control section 68, and bearer integration timing = t, radio Channel = C, frame offset = Dc, transmission rate = Sc (= Sa + Sb) are notified.

The transmission delay adding section 72 delays the input data (up to the bearer frame “a−7”) before the bearer integration timing t by a frame offset = Da, and also inputs the input data (bearer integration timing t) and subsequent times. With respect to the bearer frame “a-8”, the frame delay = Dc (≧ Da) is delayed and output to the bearer data multiplexing unit 73. Thereby, on the transmission side, the bearer frames “a-7” before and after the bearer integration timing t,
An idle time (Dc-Da) occurs between "a-8" as shown. Also, this bearer integration timing t
From the bearer frame "b-
0 "and the like, and the transmission delay adding section 72 sets the frame offset = D for these bearer frames" b-0 "and the like in the same manner as for the bearer service A.
After being delayed by c, the data is output to the bearer data multiplexing unit 73.

After the bearer integration timing t, the bearer data multiplexing section 73 time-division multiplexes (transmission rate Sc = Sa + Sb) each data of the bearer services A and B inputted at the same frame offset timing Dc. Further, the wireless frame format conversion unit 74 converts the data into a wireless frame format according to the set transmission speed Sc. The wireless frame format conversion unit 74
Is provided with a radio frame format corresponding to each transmission rate, and by using this, bearer services A and B are used.
Header information and the like that are common and redundant are deleted. Then, the data integrated with the bearer is transmitted from the base station 2 via the radio channel C.

In the terminal station 1, the bearer integrated data of the radio channel C is received after a delay of the frame offset Dc from the bearer integrated timing t. The bearer data separation unit 63 time-division-separates the received and format-converted bearer integrated data into bearer data of the bearer services A and B. Then, the reception delay adding unit 64 further adds the separated bearer data A and B to the time Dc ′ (= T−D
c) Delay and output. Therefore, the bearer frame “a−” input on the transmitting side at the bearer integration timing t.
"8" and "b-0" are output from the receiving side after a delay of a total of one frame period T.

Here, focusing on the continuity of the output data on the receiving side, the bearer frames "a-1" to "a-7" are output one frame after the bearer integration timing t. From one frame after t, bearer frames “a-8” and “b” related to bearer integration
A series of bearer frames after "-0" are continuously output. Thus, even if the bearer service A is integrated into the radio channel C with a different frame offset C by the bearer integration with the bearer service B, the transmission on the reception side is performed without interruption without changing the delay distribution between transmission and reception. It is possible to continue.

The unused radio channel C (that is, the unused radio channel C)
If two channels of the bearer services A and B can be accommodated and the frame offset is equal to or greater than Da), a single bearer service B can be accommodated for the time being, and preferably, a radio whose frame offset is equal to or less than Da Search for a channel. Wireless channel B that satisfies the conditions
If there is (frame offset = Db ≦ Da), the wireless channel B is reserved (captured), and the terminal station 1 TE-B
Call. Eventually, when there is a response from TE-B, communication of bearer service B via wireless channel B is started. At this time, the delay distribution between transmission and reception for the bearer service B is Db (≦ Da) and Db ′ (= T−Db). Thereafter, the mobile terminal continues to search for an unused wireless channel that can accommodate both bearer services A and B and has a frame offset of Da or more. If a wireless channel C that satisfies the condition is found, the bearer service B is also used for the bearer service B. A process similar to that described for A is performed to integrate bearer services A and B into radio channel C.

Further, although it is possible to accommodate two channels of bearer services A and B, there is no unused radio channel whose frame offset is equal to or greater than Da, and a single bearer service B can be accommodated. Da
If there is no following radio channel, an unused radio channel B (frame offset Db) whose frame offset is as close to Da as possible (that is, Db> Da may be used)
Starts communication of the single bearer service B. At this time, the delay distribution between transmission and reception for bearer service B is Db (≒ Da) and Db ′ (= T−Db).

In this way, while the bearer services A and B are transmitted on different radio channels, the search continues for an unused radio channel that can accommodate both bearer services and has a frame offset of Db or more. The same processing as described above for the bearer service A is performed for the bearer service B, and the bearer integration is performed.

Although the conditions for acquiring a radio channel and the bearer integration method in the base station controller 3 have been described above, the method of acquiring the radio channel (resource management method for the radio channel, etc.) is different from that of the base station controller 3. This may be independently performed by the apparatus described above.

In the first embodiment, a case has been described in which one type and one system of delay can be allocated for each bearer service between transmission and reception. However, two types and two systems for each bearer service between transmission and reception are described. Can be configured to control the delay distribution. Although the configuration in this case is not shown, for example, the transmission delay addition unit 72, the bearer data multiplexing unit 73, the bearer data separation unit 63, and the reception delay addition unit 64 of FIG.
B, the bearer data multiplexing unit 73B, the bearer data demultiplexing unit 63B, and the reception delay adding unit 64B have the same configuration, so that two types and two
It is possible to control the delay distribution of the system. And
By configuring the first embodiment in this way, one or two or more bearer services of an arbitrary delay distribution can be integrated with other bearer services of an arbitrary delay distribution.

The operation in this case will be specifically described with reference to FIG. On the transmitting side, bearer frames "a-1" to "a-4" and "b-1" to
“B-4” is stored in each first buffer (not shown) provided for each bearer service, and after being respectively delayed by the first transmission delays A and B (> A), these are stored in each first buffer. 1 and is transmitted by the wireless channels A and B. Also, the bearer frame “a” input after the integration of the bearer
-5 "to" a-8 "and" b-5 "to" b-8 "are stored in respective second buffers (not shown) provided for each bearer service, and each is stored in a common second buffer. Transmission delay C (<
After delaying by A, B), these are read from each second buffer, integrated by the bearer, and transmitted by the radio channel C. At this time, due to the relationship of the transmission delay C <A, B, the subsequent bearer frames "a-5" and "b-5" are read before the reading of the preceding bearer frames "a-4" and "b-4" is completed. Reading is started, but since the buffers are provided for the first and second two systems (or two frames) for each of the bearer services, it is possible to read them at partially overlapping timing.

On the receiving side, the bearer frames “a-1” to “a-1” received via the radio channels A and B before the bearer integration are performed.
"A-4" and "b-1" to "b-4" are respectively stored in first buffers (not shown) provided for each bearer service, and each is stored in each first reception delay A '( = TA),
After being delayed by B '(= TB), these are read from each first buffer and output to the bearer services A and B.
Also, the bearer integrated frames “a-5” to “a-8” and “b-
5 "to" b-8 "are stored in respective second buffers (not shown) provided for each bearer service after the bearer separation, and each of them is stored in a common second reception delay C '(= TC). )
After these delays, these are read out from each second buffer and synthesized and output to bearer outputs A and B. At this time, the following bearer frames “a-5” and “b-5” are replaced by the preceding bearer frame “a” due to the relationship of the transmission delay C <A, B.
-4 "and" b-4 "are partially overlapped, but since the above-mentioned buffers are provided for the first and second two systems (or two frames) for each of the bearer services, these are partially received. It is possible to write at overlapping timings.

Focusing on the continuity of the output data on the receiving side,
Bearer frames "a-1" to "a-4" before bearer integration
And "b-1" to "b-4" are bearer integration timings t.
Is completed by one frame after, and from one frame after the bearer integration timing t, the bearer frames “a-5” to “a-8” and “b−” after the bearer integration.
5 "to" b-8 "are continuously output. Therefore,
According to this embodiment, the frame offsets A, B,
Regardless of the magnitude of C, one or two or more bearer services A, B, etc. of the arbitrary delay distribution are transferred to another arbitrary delay distribution C (0 ≦ C ≦
T) and C ′ (= TC) bearer services can be integrated without interruption.

FIG. 6 is a diagram showing a part of the configuration of a mobile communication system according to the second embodiment. In FIG. 6, delay allocation for a total of two frame periods 2T is controlled between transmission and reception, and an arbitrary frame offset from a bearer screw is set. The figure shows a case where a bearer can be integrated with a frame offset bearer screw. In the figure, 72A is a transmission delay adding unit that can delay bearer data before multiplexing within a range of 0 ≦ t ≦ 2T,
Reference numeral 64A denotes a reception delay adding unit that can delay the separated bearer data within the range of 0 ≦ t ≦ 2T. Other configurations may be the same as those described with reference to FIG.

FIG. 7 is a timing chart (1) of bearer integration control according to the second embodiment, in which bearer services A and D are communicating at frame offsets Da and Db (> Da).
B shows a case where B is integrated into a bearer service with a frame offset Dc (> Db). Before the bearer integration, the bearer frames “a-0” to “a-6” and “b−” input in synchronization with the reference frame timing on the transmission side.
"0" to "b-6" are transmitted after delays of time Da and Db (> Da), respectively. On the other hand, on the receiving side, the received bearer frames “a-0” to “a-6” and “b-0” to “b-
6 "are converted to time Da '(= 2T-Da) and Db' (= 2
After delaying by T-Db), the signal is output. Therefore, each bearer frame “a-0” to “a-6” and “b-0” to
“B-6” is output from the receiving side after a delay of a total of two frame periods 2T.

At the bearer integration timing t, the subsequent bearer frames “a-7” to “a-17” and “b−” inputted in synchronization with the reference frame timing on the transmission side.
7 ”to“ b-17 ”are each time T + Dc (where Dc>
After the delay of Db), bearer multiplexing is performed and transmitted. on the other hand,
On the receiving side, bearer frames "a-7" to "a-17" and "b-7" to "b-1" received and separated into bearers.
7 "are delayed by the time Dc '(= T-Dc), respectively, and then output. Therefore, each bearer frame “a-7” to “a” input after the bearer integration timing t on the transmission side.
“−17” and “b-7” to “b-17” are also output from the receiving side after a delay of 2T in a total of two frame periods.

Focusing on the continuity of the output data on the receiving side, the bearer frames “a-0” to “a-6” and “b-0” to “b-6” correspond to the bearer integration timing t of 2
It is output before the frame, and after two frames after the bearer integration timing t, bearer frames “a-7” to “a-17” and “b-7” to “b” related to the bearer integration
−17 ”are continuously output.

FIGS. 8 and 9 are timing charts (2A) and (2B) of bearer integration control according to the second embodiment.
Then, the bearer services A and B communicating at the frame offsets Da and Db (<Da) are changed to the frame offsets Dc (<
It shows a case of integrating with the bearer service of Db).
The operation before the integration of the bearers is the same as that described with reference to FIG. However, in the examples of FIGS. 8 and 9, Da> Db.

At the bearer integration timing t, the subsequent bearer frames “a-7” to “a-17” and “b−” input in synchronization with the reference frame timing on the transmission side.
7 ”to“ b-17 ”are respectively time T + Dc (where Dc <
After the delay of Db), bearer multiplexing is performed and transmitted. on the other hand,
On the receiving side, bearer frames "a-7" to "a-17" and "b-7" to "b-1" which are received and separated into bearers.
7 "are delayed by the time Dc '(= T-Dc), respectively, and then output. Therefore, each bearer frame “a-7” to “a” input after the bearer integration timing t on the transmission side.
“−17” and “b−7” to “b−17” are output from the receiving side after a delay of a total of two frame periods 2T.

Focusing on the continuity of the output data on the receiving side, the bearer frames "a-0" to "a-6" and "b-0" to "b-6" correspond to the bearer integration timing t of two.
It is output before the frame, and after two frames after the bearer integration timing t, bearer frames “a-7” to “a-17” and “b-7” to “b” related to the bearer integration
−17 ”are continuously output.

When comparing the delay control of FIG. 7 with the delay control of FIGS. 8 and 9, in FIG. 7, bearer integration is performed without any means at frame offsets Dc> Da and Db, and in FIGS. 8 and 9, frame offset Dc <Da, The bearer is integrated with Db without any means. Therefore, according to the second embodiment, the bearer service A communicating at the arbitrary frame offset Da can be integrated with the bearer service at the arbitrary frame offset Db, and the bearer service communicating at the arbitrary frame offset Da, Db can be used. It is also possible to integrate A and B into a bearer service with an arbitrary frame offset Dc.

FIG. 10 is a diagram showing a partial configuration of a mobile communication system according to the third embodiment.
Along with controlling the delay distribution for the frame period 2T,
This figure shows a case where the delay of the wireless transmission content that occurs at the time of bearer integration is improved.

In the figure, reference numeral 72B denotes a transmission delay adding unit capable of simultaneously outputting two types of delay data for each bearer service according to a set transmission delay, and 73B denotes each bearer data input from the transmission delay adding unit 72B. A bearer data multiplexing unit capable of separately setting the timing of bearer data multiplexing for each bearer so that two radio channels are simultaneously provided for one terminal station 1. 63B is bearer data multiplexed irregularly. The bearer data separation unit 64B outputs two types of bearer data for each bearer service according to the setting from the reception control unit 68, and the bearer data 64B accumulates the bearer data for the set reception delay and outputs it to the bearer service interface unit 65. This is a reception delay adding unit. Other configurations may be the same as those described with reference to FIG.

FIGS. 11 and 12 are timing charts (A) and (B) of the bearer integration control according to the third embodiment.
Shows the case where the bearer services A and B communicating at the arbitrary frame offsets Da and Db are integrated into the bearer service at the arbitrary frame offset Dc. In the figure,
TE-C and TE-A are connected by a bearer service A (transmission rate Sa) on a radio channel A (frame offset Da), and TE-D and TE-B are connected on a radio channel B (frame offset Db). Bearer service B
(Transmission speed Sb). At this time, the total delay time of the transmission delay adding section 72B and the reception delay adding section 64B is set to 2 radio frame periods 2T. Wireless channel C capable of accommodating two channels (transmission speed = Sa + Sb)
When (frame offset Dc) becomes available, it operates as follows.

The transmission control unit 78 and the reception control unit 68 provide the frame offset Dc of the radio channel C that has become available.
Is the frame offset Da / D of the radio channel A or B
b, any one of the bearer services (FIG. 11)
Then, the bearer service A) is selected, and the bearer integration timing A is set in advance. In the transmission delay adding unit 72B, for the data of the bearer service A input before the bearer integration timing A, the frame offset Da
Data multiplexing unit 73B with a time delay corresponding to
And the bearer frame “a” at the first frame offset Dc among the data input thereafter.
-7 "is delayed by T + Dc and output till then, followed by data and output. At this time, a vacant time of (T + Dc-Da) occurs in the output data. Further, the subsequent bearer frames “a-8” to “a-17” are delayed by a time corresponding to the frame offset Dc and output to the bearer data multiplexing unit 73B as separate signals.

On the other hand, with respect to the data of the bearer service B, the bearer frames “b-0” to “b-8” input up to the bearer integration timing B have the frame offset D.
b, and the subsequent bearer frames “b-9” to “b-17” are delayed by a time corresponding to the frame offset Dc and output as separate signals to the bearer data multiplexing unit 73B. I do.

The bearer data multiplexing section 73B carries out the bearer service A given the bearer integration timing A in advance.
After the integration of the bearers, two bearer frames "a-7",
"A-8" is time-division multiplexed and converted into data to be transmitted on the radio channel C by the radio frame format converter 74.
Output to On the other hand, the bearer frame “b-7” of the bearer service B input before the bearer integration timing B,
The "b-8" and the like are kept as they are, and the bearer frame "b-9" of the bearer service B input thereafter is time-division multiplexed with the bearer frame "a-9" of the bearer service A, and the radio frame format is converted. Output to the unit 74.

In the bearer data separation section 63B of the terminal station 1, two types of bearer frames “a” are provided for each bearer service in accordance with the order of the bearer integration timings A and B set by the reception control section 68 from the received and input bearer data. −
7 "and" a-8 "to" a-17 ". In the reception delay adding section 64B, the bearer integration timing A
To the bearer frame “a-6” input before the first frame offset Dc for 2T-Da,
The bearer frame “a-7” immediately after the offset is T-
Dc, and subsequent bearer frames "a-8"-
"A-17" is output with a delay of 2T-Dc. Also, after the bearer integration timing B, the bearer frame “b” input before the first frame offset Dc
Up to -8 ", the delay is delayed up to 2T-Db, and bearer frames" b-9 "to" b-17 "input thereafter
Is output with a delay of 2T-Dc.

Since the transmission delay + reception delay is always set to be 2 radio frame periods 2T, the input from the bearer service interface unit 71 of the base station control device 3 is applied to the bearer service interface of the terminal station 1. Part 6
Up to the output of 5, the delay time is always the same. Therefore,
Even if the frame offset after the bearer integration is smaller than the frame offset before the bearer integration, the bearer service A and the bearer service B can perform the bearer integration without an instantaneous interruption.

When the integrated bearer data of the radio channel C in FIG. 8 is compared with the integrated bearer data of the radio channel C in FIG. 11, the bearer multiplex frames “a-8” and “b-8” are shown in FIG. At the transmission timing, in FIG. 11, the bearer multiplex frame “a-9”,
“B-9” has been transmitted. The same applies thereafter.
That is, the transmission phase of the bearer multiplexed frame is 1 in FIG.
We are advanced by the frame. This means that even if bearer multiplexing is performed on the radio channel C under the same conditions, the substantial signal delay is as shown in FIG.
Is shorter than that in FIG.
According to the embodiment, even if the above-described bearer integration is performed a plurality of times, it is possible to suppress the cumulative increase of the signal delay.

FIG. 13 is a flowchart of a bearer service integration pattern determining process according to the embodiment. When the bearer service is connected, the maximum allowable delay time of the communication service specified by the QoS (Quality Of Service) parameter and the system delay time (wireless Transmission delay, signal processing delay, etc.)
Thus, a process for determining an acceptable bearer integration pattern is shown. Here, the bearer integration patterns that can be selected include: system (0): a conventional bearer integration system (no delay) system (1): a bearer integration system (delay T) system according to the first embodiment (delay T) system (2) : Bearer integration method (delay 2T) according to the second and third embodiments.

In the method (0), bearer integration can be performed only when the frame offset before and after the integration of the bearer is the same for the radio channel, and no delay is added between transmission and reception. In the method (1), bearer integration can be performed only on a radio channel larger than both offsets of the integrated bearer service, and the total delay addition between transmission and reception is 2T. And, in the method (2), bearer integration is possible regardless of the offset of the bearer service to be integrated, and the total delay addition between transmission and reception is 2T. Since the probability that a wireless channel capable of bearer integration can be secured is determined by the range of the offset selection range of the wireless channel, the probability decreases in the order of method (2) → method (1) → method (0). However, the specified QoS
A delay exceeding the maximum allowable delay time of the parameter cannot be added. The bearer service integration pattern determination processing according to the present embodiment is created in consideration of such a situation.

In step S1, a delay time (delay margin: delay margin) that can be added to the system is determined by “delay margin = QoS delay−system delay”. In step S2, it is determined whether or not delay margin ≧ 2T (for two frames of the wireless channel).
In step 3, the method (2) is selected. In the case of NO, it is further determined in step S4 whether or not delay margin ≧ T, and in the case of YES, the method (1) is selected in step S5. Also NO
In the case of, the method (0) is selected in step S6. This is a pattern search process in which method (2)> method (1)> method (0) is prioritized. By determining the bearer integration method in this procedure, the frame offset of the radio channel after the bearer integration is determined. Since the selection range can be maximized, the transition time to bearer integration can be reduced.

FIG. 14 is a flowchart of a bearer service integration pattern determining process according to another embodiment, which is based on the QoS delay at the time of connection of a bearer service and the transmission delay difference of the bearer service at the time of simultaneous connection that can be specified for each bearer service. And a process for determining a bearer service integration pattern.

By the way, when radio channels between different terminals TE-A and TE-B are integrated as in the case of FIG. 4, even if there is a difference in propagation delay between bearer services A and B, There is no problem as long as the respective propagation delays are shorter than the maximum allowable delay time specified by the QoS parameter. However, for services that require the same transmission delay between channels, such as high-speed digital lines (bearer services defined by G.703 and I.431), a certain terminal is connected first. The bearer service and the bearer service subsequently connected to the terminal must have substantially the same transmission delay (ie, the same bearer integration pattern). However, even in this case, a delay exceeding the maximum allowable delay time of the QoS parameter specified for the newly connected bearer service cannot be added. The bearer service integration pattern determination processing according to the present embodiment is created in consideration of such a situation.

In step S11, the delay margin (N)
Is calculated by “delay margin (N) = QoS delay (N) −system delay (N)”. Here, (N) is a bearer allocation number to the same terminal station. In step S12, it is determined whether or not a new call (N = 0) for a certain terminal station. In the case of a new call, the process proceeds to step S35,
A bearer integration pattern can be selected by the same processing as in FIG. Here, each processing of steps S32 to S36 corresponds to each processing of steps S2 to S6 in FIG. However, in step S33, the fact that the minimum value (that is, the minimum value of the delay margin) Dmin of the integrated bearer pattern selected in the new call is 2T is stored.
The same applies to steps S35 and S36. Thereafter, the bearer service connected to the terminal station cannot exceed the value of the minimum delay bearer integration pattern Dmin.

Further, the new ca is determined in the determination in step S12.
If it is not 11 (N ≠ 0), it is determined in step S13 whether or not Dmin = 0 for the terminal station. Dmi
If n = 0, it is determined in step S21 that the current delay pattern (N) = 0. If Dmin = 0 is not satisfied, then Dmin = Dmin =
T is determined. If Dmin = T, it is further determined in step S16 whether or not the present delay margin (N) ≧ T. If Dmin = T and the current delay margin (N) ≧ T for the terminal station, the current delay pattern (N) = T is determined in step S22. If the current delay margin (N) ≧ T is not satisfied, the current delay pattern (N) = 0 is determined in step S17, and Dmin = 0.
Update to Also, Dm is determined again in step S14.
If in = T is not satisfied, it is further determined in step S15 whether or not Dmin = 2T for the terminal station. Dmin
In the case of = 2T, it is further determined in step S18 whether or not the present delay margin (N) ≧ 2T. Dmin = 2T for the terminal station, and the current delay margin (N) ≧
In the case of 2T, the current delay pattern (N) is determined to be 2T in step S23. If the current delay margin (N) ≧ 2T is not satisfied, it is determined in step S19 whether the current delay margin (N) ≧ T. If Dmin = 2T and the current delay margin (N) ≧ T for the terminal station, the current delay pattern (N) = T is determined in step S24, and Dmin = T is updated.
If it is determined in step S19 that the current delay margin (N) is not equal to or larger than T, the current delay pattern (N) is determined to be 0 in step S20, and Dmin is updated to 0.

By determining the bearer integration method in this procedure, the transmission delay difference between bearer services connected to the same terminal station can be minimized while maintaining the maximum allowable delay time of the specified QoS parameter.

In the above embodiments, a case has been described in which a plurality of bearer services are integrated. However, even when an already integrated bearer service is separated, the distribution of delay between transmission and reception is changed without interruption. Can be separated.

Further, in each of the above embodiments, an example of application to a mobile communication system using the CDMA system has been described. However, the present invention is also applicable to communication systems using various other communication systems (such as the TDMA system).

Although the preferred embodiments of the present invention have been described, it is to be understood that various changes can be made in the configuration, control, processing, and combinations thereof without departing from the spirit of the present invention. Not even.

[0104]

As described above, according to the present invention, by re-adjusting the delay distribution between transmission and reception, it is possible to integrate bearers without interruption even between radio channels having different frame offsets / transmission speeds. It is possible to integrate the bearer services that can be integrated more and more quickly and increase the number of available radio channels.

[Brief description of the drawings]

FIG. 1 is a diagram (1) illustrating the principle of the present invention.

FIG. 2 is a diagram (2) illustrating the principle of the present invention.

FIG. 3 is a diagram (3) illustrating the principle of the present invention.

FIG. 4 is a diagram illustrating a partial configuration of a mobile communication system according to the first embodiment.

FIG. 5 is a timing chart of bearer integration control according to the first embodiment.

FIG. 6 is a diagram illustrating a partial configuration of a mobile communication system according to a second embodiment.

FIG. 7 is a timing chart (1) of bearer integration control according to the second embodiment.

FIG. 8 is a timing chart (2A) of bearer integration control according to the second embodiment.

FIG. 9 is a timing chart (2B) of bearer integration control according to the second embodiment.

FIG. 10 is a diagram illustrating a partial configuration of a mobile communication system according to a third embodiment.

FIG. 11 is a timing chart (A) of bearer integration control according to the third embodiment.

FIG. 12 is a timing chart (B) of bearer integration control according to the third embodiment.

FIG. 13 is a flowchart of bearer service integration pattern determination processing according to the embodiment.

FIG. 14 is a flowchart of a bearer service integration pattern determination process according to another embodiment.

FIG. 15 is a diagram (1) illustrating a conventional technique.

FIG. 16 is a diagram (2) illustrating a conventional technique.

FIG. 17 is a diagram (3) illustrating a conventional technique.

FIG. 18 is a diagram (4) illustrating a conventional technique.

FIG. 19 is a diagram (5) explaining a conventional technique.

[Explanation of symbols]

 Reference Signs List 1 mobile station (MS) 2 base station (BTS) 3 base station controller (BSC) 4 mobile exchange (MSC) 6,7 terminal device (TE-C, TE-D) 8,9 terminal device (TE-A, TE-B) 51 Transmission delay addition unit 52 Bearer data multiplexing unit 53 Wireless channel transmission unit (CDMA) 54 Wireless channel reception unit (CDMA) 55 Bearer data separation unit 56 Reception delay addition unit 61 CDMA wireless reception unit 62 Radio frame format conversion Unit 63 bearer data separation unit 64 reception delay addition unit 65 bearer service interface unit 66 offset frame timing generation unit 67 reference frame timing generation unit 68 reception control unit 71 bearer service interface unit 72 transmission delay addition unit 73 bearer data multiplexing Unit 74 Wireless frame format conversion unit 7 The base station interface unit 76 offset frame timing generating unit 77 reference frame timing generating unit 78 sends the controller 100 the public network (PSTN)

Claims (13)

[Claims] 1. A bearer integration method for integrating a plurality of bearer services into one radio channel by time-division multiplexing / separation by baseband processing, wherein a bearer input on a transmitting side in synchronization with a reference frame timing of a period T. The service data is output from the receiving side after one frame delay under the delay control of delay distribution A (0 ≦ A ≦ T), A ′ (= TA) between transmission and reception, and the bearer service is integrated with another bearer service. In this case, the delay distribution between transmission and reception is B (A ≦ B ≦ T), B ′ (= TB)
A bearer integration method, wherein the bearer is integrated into a wireless channel. 2. The method according to claim 1, wherein each bearer service being communicated with a plurality of delay allocations is integrated into a wireless channel of a delay allocation having a transmission delay greater than the maximum among these. 2. The bearer integration method according to 1. 3. A system for transmitting / receiving data for each bearer service.
The bearer according to claim 1 or 2, wherein delay distribution of two types and two systems is enabled, and one or more bearer services of arbitrary delay allocation are integrated with bearer services of other arbitrary delay allocation. Integration method. 4. A bearer integration method for integrating a plurality of bearer services into one radio channel by time-division multiplexing / separation by baseband processing, wherein a bearer input on the transmitting side in synchronization with a reference frame timing of a period T. Under the delay control of delay allocation A (0 ≦ A ≦ T), A ′ (= 2T−A) between transmission and reception, the service data is output from the receiving side after a delay of two frames, and the bearer service is arbitrarily delayed allocation T + B ( 0 ≦ B ≦ T), B
'(= T−B) radio channel. 5. A plurality of delay distributions A (0 ≦ A ≦ T), A ′
(= 2T−A) and B (0 ≦ B ≦ T), B ′ (= 2T−
5. The method according to claim 4, wherein each bearer service communicating with each other in B) or the like is integrated into radio channels of arbitrary delay distribution T + C (0 ≦ C ≦ T) and C ′ (= TC). Bearer integration method. 6. A transmission / reception system with two bearer services.
In addition to allowing two types of delay distribution, a plurality of delay distributions A (0 ≦ A ≦ T), A ′ (= 2T−A) and B
(0 ≦ B ≦ T) and B ′ (= 2T−B), respectively, and each of the bearer services being communicated is arbitrarily distributed T + C (0 ≦ C ≦
T), C ′ (= T−C), when integrating into the radio channel C, on the transmitting side, for any one of the bearer services A, the first bearer frame of the input following the bearer integration timing is represented by the time T + C, And the second and subsequent series of bearer frames are respectively delayed by time C, and for the other bearer service B, the third and subsequent series of input bearers following the bearer integration timing are delayed by time C. On the receiving side, and the receiving side outputs the separated first bearer frame after a delay of time TC and a second and subsequent series of bearer frames after a delay of time 2TC, respectively. The bearer integration method according to claim 5, wherein the third and subsequent series of bearer frames are output after a delay of time 2T-C. 7. The bearer integration method according to claim 1, wherein a delay distribution point between transmission and reception corresponds to a frame offset timing of the system. 8. A bearer integration method for integrating a plurality of bearer services into one radio channel by time-division multiplexing / separation by baseband processing, wherein a delay that the system has from a maximum allowable delay defined by service quality is determined. A total delay margin DM that can be distributed between transmission and reception is obtained by subtraction. If DM ≧ 2T (where T is a reference frame period), the bearer integration method according to claim 4, 5, or 6, wherein T ≦ DM < In the case of 2T, the bearer integration method according to claim 1, 2 or 3, and DM <T
In the case of (1), the bearer integration method in which the delay distribution between transmission and reception is 0 is effective. 9. An executable bearer integration method, wherein DM ≧ 2
The bearer integration method according to claim 8, wherein the search is performed based on a condition determination in the order of T, T? DM <2T, and DM <T. 10. In the case where a new bearer service is additionally integrated for the same terminal station, the previously connected bearer integration method is stored, and the currently executable bearer integration method is connected to the previously connected bearer integration method. The bearer integration method according to claim 8, wherein the bearer integration method is determined according to: 11. A bearer integration method that matches a current delay margin when a delay margin of a bearer service to be additionally integrated this time is smaller than an additional delay of a previously connected bearer integration method. The bearer integration method according to claim 10. 12. A communication device of a wireless communication system capable of integrating a plurality of bearer services into one wireless channel by time-division multiplexing / separation by baseband processing, wherein the communication device synchronizes with a reference frame timing and inputs data before bearer integration. A transmission delay adding unit that delays one or two or more bearer service data to respective frame offset timings and delays a plurality of bearer service data related to bearer integration input after the bearer integration until the frame offset timing related to the bearer integration. And a bearer data multiplexing unit for time-division multiplexing a plurality of bearer service data related to bearer integration of an output of the transmission delay adding unit. 13. A communication apparatus of a wireless communication system capable of integrating a plurality of bearer services into one wireless channel by time-division multiplexing / separation by baseband processing, wherein a bearer integrated via one wireless channel is integrated. A bearer data separation unit that performs time-division separation of such data, and delays one or more bearer service data received before the bearer integration until a reference frame timing, and outputs each of the bearer data separation units after the bearer integration. A communication device comprising: a reception delay adding unit that delays bearer service data to reference frame timing.